OXINIUM Oxidized Zirconium, is an advanced bearing material that combines the strength of metal with the wear resistance of ceramics.  All JOURNEY II Active Knee have OXINIUM femoral components available.  


  • Is 4,900 times more resistant to abrasion than CoCr2
  • Is more than twice as hard as CoCr3
  • Has a coefficient of friction that is up to half that of CoCr4

Metal Content

  • OXINIUM Oxidized Zirconium, exclusively from Smith & Nephew, has less than 0.0035% nickel content, compared to a maximum content of 0.5% in cobalt chrome and 0.1% in titanium.
  • Surgeons should be aware that all metal implants contain varying amounts of cobalt, chromium, and nickel. 

Metal Content of implants1



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1. ASTM International Standard Specification for Wrought Zirconium-2.5Niobium Alloy for Surgical Implant Applications (UNS R60901) Designation: F 2384 – 05 andStandard Specification for Cobalt-28 Chromium-6 Molybdenum Alloy Castings and Casting Alloy for Surgical Implants (UNS R30075): Designation: F 75 – 07.
2. Hunter, G., and Long, M. Abrasive Wear of Oxidized Zr-2.5Nb, CoCrMo, and Ti-6Al-4V Against Bone Cement. 6th World Biomaterials Cong. Trans., Society for Biomaterials, Minneapolis, MN,2000, p. 835.
3. Long, M., Riester, L., and Hunter, G. no-hardness Measurements of Oxidized Zr-2.5Nb and Various Orthopaedic Materials. Trans. Soc. Biomaterials, 21, 1998, p. 528.
4. Poggie RA, Wert J, Mishra A, et al (1992). Friction and wear characterization of UHMWPE in reciprocating sliding contact with Co-Cr, Ti-6Al-4V, and zirconia implant bearing surfaces. Wear andFriction of Elastomers, Denton R and Keshavan MK, Eds., West Conshohocken, PA: ASTM International.